Has the new Early 2013 Retina Macbook Pro still lag and display issues?

Question

Hello. I've never had a Mac before and I'm thinking of buying the new "early 2013" 15-inch (2.7 Ghz, 16Gb Ram, $2799) Retina Macbook Pro. I live in Argentina but I'm going to NYC in a couple of weeks and I want to get one there. The thing is, that I can not be returning it 2 or 3 times like I read a lot of peple had to, because I'll be coming back home after 2 weeks and here they will only fix it, not replace it for a new one, and that could take months.
So, I want to know if you guys can help me decide if I should go for it or not, if these image retention and burn in and ui lag issues appear to be fixed with this new model or if it is still the same. If I don't buy this one I'll be getting the new Samsung Series 7 Chronos they showed in CES 2013, still not available in the market. Thanks a lot!

Answer 1

huevo_gnr wrote:
I just checked and I have the LG SJA2, too. I didn't notice any Image retention at first, I tested it with the chessboard test for 5 or 6 minutes, it showed no IR. But with 10 minutes I can see a bit of IR. Nothing that can affect the normal use of the computer, I mean I have to put the chessboard for 10 minutes and then change to grey to notice it, but it does exist and is the SJA2 from LG. If it doesn't get worst, I think it doesn't even matter. I just hope it doesn't get worst.
FWIW, I noticed that until I stopped looking at the chessboard before it switched; my eyes had image retention. But  in that awfully long thread on the subject, some have insisted that if it's an LG, it's trouble so I guess there's no guarantee. (BTW, I was writing this when you tried the test again - ocular image retention?)
Not to hijack the thread, but shortly after I posted that "good news" about SJA2, my rMBP simply refused to start at all; it was totally inert. Charging, not charging, SMC reset, nothing helped. Tech support's only solution was bring it in to be fixed.
On a hunch, and remembering something about magnets in the top of the display activating a reed switch in the base, probably near the trackpad, I lifted the front of the Mac about 1/4" inch and let it drop. Bingo! The Mac has operated properly so far. I suspect the reed switch was stuck in the wrong position, and some evidence suggests it was that way out of the box and my fix corrected it.